Locomotive fire-box.



F. A. ALLINGER.

LOCOMOTIVE FIRE BOX.

APPLICATION man Auw. 1914.

1,165,932. Patented 1m28, 1915.

MUM g @gw/www y coLuMmA PLANOGRAPH C0.W^SH1NGTON. D. c.

lll

ldellfflllll'flf FRANK A. ALLNGER, OF LOS ANGELES, CIJFORNIA, ASSIGNR FONEAHALF TO l CHRIST VDLZ, l LOS ANGELES, CALIIfT'G-NI.

LOCMOTWE HERE-BOX.

Patented Dec. 28, 312th.

Application 'tiled .August 5, 1914:. Serial No. 855,126.

' o all whom t may concern Be it known that l, FRANK A. Ammann, acitizen of the United States, residing at Los Angeles, in the county ofLos Angeles and State of California, have invented a new and usefulLocomotive Fire-Box, of which the following is a specification.

This invention relates to air supply pans for oil burning engines.

The object in general of the invention is' to provide an air supply panfor an oil burning engine with means for heating the air thoroughlybefore it enters the engine fire box and for distributing the airuniformly within the fire box, thus insuring a more thorough mixture ofthe air with the oil fuel constituents and a more uniform and completecombustion of said mixture, in the engine fire box than can be attainedin the oil burning engines now in use.`

Other objects will appear hereinafter.

`ltefmring to the drawings: Figure l is a longitudinal section of anenOine boiler, fire box and air supply pan, the air supply aan beinOshown in the form of mv inven-` t o tion. Fig. 2 is an enlargedtransverse vertical section of my improved air supply pan taken on lineu32-n2 of Fig. l. Fig. 3' is a detached plan view of my improved airsupply pan. Fig. -l is an enlarged plan view of one of the air supplypan lining bricks. Fig. is an enlarged side view of said brick.

My improved air supply pan is particularly adapted for use on oilburning locomotives and in the drawing are shown a locomotive boiler land lire box 2, to the bottom of which fire box my improved air supplypan is attached in the manner hereinafter described. lll/ly improved airsupply pan comprises an upper receptacle 3 and an air chamber 4, locateddirectly below said recep tacle,y said chamber having Aan air inlet 5.The walls of said chamber and receptacle are so arranged as to form airspaces 7 therebetween, for the diffusion of the air in the air chamber,which is controlled by door 6. rlhe wall 8, of receptacle 3 is inclinedslightly and is provided with a plurality of perforations 9, whichprovide communication from the air spaces 7 to said receptacle. rlhe airsupply pan has flanges 10, provided with holes l1 through which bolts l2are inserted and screwed into the lower extremities 13 of the walls ofthe fire box 2, for attaching the air supply pan in position directlybelow the fire box. The receptacle 3 is lined with fire brick 2O and 2l,which may be laid with their wide sides against the wall S inasmuch assaid wall is inclined only slightly. The lire brick are provided withperforations 22 and rest over the perforated portion of the receptaclewall S while the brick 21 are the ordinary plain fire brick. rlhe firebrick 2O are provided with grooves 25 in their lower faces which groovesprovide communication between the perforations 9 in the receptacle wall8 and the perforations 22 in said brick. Through the forward wall of theair supply pan receptacle '3 projects an oil fuel nozzle 30.

lt will be noted that the air supply pan is of considerably less lengththan the receptacle 3 and that the former extends under the latter andentirely across the same adj a cent the rear end thereof. The walls ofthe receptacle are only perforated over the air supply pan and thereforethe air entering the receptacle through these openings does not comeinto contact with theV fuel entering through the nozzle 30 until saidfuel has had a chance to move some little distance away from the forwardend wall of the receptacle. This is an important feature since itprevents the intense heat of combustion playing directly against the firbrick at the rear end of the receptacle. It is also desired to callattention to the fact that the fuel when it enters the receptacle 3 istraveling in an opposite direction to the air coming through theperfor-ations 22 and moving toward the re tubes and therefore a thoroughmixture of the two constituents takes place.

rlhe operation is as follows: Air is admitted into the chamber Ll uponopening the door 6 which allows the air to flow into the chamber throughinlet 5. From the air chamber' Ll the air iows through the perforations9 in the receptacle wall 8 into the grooves of the lire brick 20,through the perforations 22 in said fire brick, and into the air supplypan receptacle 3. Oil fuel is injected into the receptacle 3 throughnozzle in the usual manner and when the oil has united with the air inthe receptacle, it is ignited in the fire box and heat thereof heats thewater in the engine boiler l in the usual manner for the production ofsteam.

The circulation of the air through air spaces 7, perforations 9, inreceptacle wall 'in complete combustion of the oil fuel and inthegeneration of heat of the highest intensity. The complete combustion ofthe oil fuel moreover, effects a considerable saving in the amount offuel used per unit of work, and does not allow the formation of carbonand the deposit of soot in the fire box and air supply pan.

What I claim is:

1. An air supply pan for engine lire boxes having a pair of slightlyinclined downwardly converging walls, an air chamber formed under saidreceptacle adjacent the rear end thereof and extending entirely acrossthe receptacle, said air chamber having downwardly converging sidewalls, said side walls being connected at'their upper edges to thebottom of the receptacle and diverging from the walls of the receptacle,the walls of the receptacle being perforated above the air chamber andbeing imperforate in advance of the air chamber, means for admitting airto the` air chamber, means for ejecting fuel into the receptacle andfire brick covering the walls of the receptacle, said re brick beingformed with perforations communicating with the perforations formed inthe rear end of the Walls of the receptacle.

2. An air supply pan of the character described, comprising a receptaclehaving slightly inclined downwardly converging side walls, anair'chamber under said recep tacle and having downwardly converging sidewalls connected along their upper edges to the side walls of thereceptacle near their outeredges, those portions of the walls of thereceptacle which extend over the air chamber being perforated,perforated lire brick covering the perforated portions vof the walls ofthe receptacle, said fire brick being provided with channels whichestablish communication between the perforations in the walls of thereceptacle and the'` Copies of this patent may be obtained for iivecents each, by addressing the Commissioner of Patents, Washington, D. C.

